( ! ) Fatal error: Interface 'Symfony\Component\EventDispatcher\EventDispatcherInterface' not found in C:\wamp64\www\pws_product_NS\sendgrid-php\vendor\symfony\event-dispatcher\ImmutableEventDispatcher.php on line 19
Call Stack
#TimeMemoryFunctionLocation
10.0000367264{main}( )...\ImmutableEventDispatcher.php:0